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Analysis is carried out to evaluate analytically the bit error rate (BER) performance of a polarization division multiplex (PDM) quadrature phase shift keying (QPSK) optical transmission system with self-coherent detection (SCD) considering the effect of cross-polarization (XPol) induced crosstalk. Analytical expressions are developed for the signal and crosstalk photocurrents at the output of SCD...
We propose and demonstrate a noble technique for compensation of polarization-mode-dispersion (PMD) effects on polarization division multiplex (PDM) quadrature phase shift keying (QPSK) systems. The technique uses first and second radio frequency (RF) harmonic tone powers to generate the control signal for the compensation. Optical notch filter is used to filter out one of the sidebands of the optical...
We propose and demonstrate a novel technique for monitoring the first order polarization-mode-dispersion (PMD) effects on polarization division multiplex (PDM) quadrature phase shift keying (QPSK) signals. This technique uses the radio frequency (RF) tone at first harmonic and at half the data rate (half tone) of the detected electric spectrum. The electric spectrum is generated in a tap-line using...
To provide higher capacity optical fiber networks, a 107 Gb/s transmission system is simulated by using the combined features of polarization multiplexing (PM), quadrature phase shift keying (QPSK) and forward error correction (FEC). The lower tolerance to linear and nonlinear fiber impairments remains a major concern at a higher bit rate. To address the limitations set by the linear impairments,...
We simulated different modulation formats in optical fiber systems in the presence of polarization mode dispersion (PMD) and fiber nonlinearities. Non-return-to-zero (NRZ), return-to-zero (RZ), chirped RZ (CRZ), carrier suppressed RZ (CSRZ), duobinary, differential phase shift keying (DPSK), differential quadrature phase shift keying (DQPSK) and CSRZ-DQPSK formats are simulated. The maximum data rate...
We simulated two multilevel modulation formats in optical fiber systems in the presence of varying polarization mode dispersion (PMD) and fiber nonlinearities. Carrier suppressed return-to-zero differential quadrature phase shift keying (CSRZ-DQPSK) and polarization shift keying (PolSK) formats are simulated. The maximum data rate used in the system is 92 Gb/s and the length of the fiber is kept fixed...
The performance of an MC DS CDMA wireless communication system over a Rayleigh Fading Channel is analyzed in the presence of Multiple Access Interference (MAI) and Inter-Carrier Interference (ICI). The Signal to Interference plus Noise Ratio (SINR) is derived in this environment. The analysis is also extended to MC-DS-CDMA system with Rake Receiver. The performance results are evaluated numerically...
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